Quantum discord as a measure of the quantum correlations cannot be easily computed formost of density operators. In this paper, we present ameasure of the total quantum correlations that is operationally simple and can be computed effectively for an arbitrarymixed state of a multipartite system.The measure is based on the coherence vector of the party whose quantumness is investigated as well as the correlationmatrix of this part with the remainder of the system. Being able to detect the quantumness of multipartite systems, such as detecting the quantum critical points in spin chains, alongside with the computability characteristic of the measure, makes it a useful indicator to be exploited in the cases which are out of the scope of the other known measures.

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